Claim

The Build with Gemini XPRIZE is the largest hackathon in history by a wide margin.

Type COMPARATIVE · truth-evaluable: yes · status at snapshot: ACTIVE · created seq 2621

Referenced 166 times: checked 4, looked up by assistants 1, viewed 102, shared 59. A count of attention, not evidence.

Topics

Software · 03192ed8 Education · 03192ed8

Assessment

Supported

Score: 0.9908 under ledger-default@0.3.0 at snapshot 27745

3 of 4 review checks done · 3 counted

4 independent evidence lineages · review checks 3 of 4 · stability HIGH

Main unresolved issue: 8 counted evidence items have no independence review; repeats of one origin may be counted as several coverage:6dc28559-c478-85c3-9400-f65971944d1a

Not yet independently audited.A quoted passage from go.xprize.org was not found on the page when Galedra fetched it.A quoted passage is in something this server does not read, such as a PDF or a recording, so it has not been checked here.

Why?

Strongest counted support: The XPRIZE Foundation describes Build with Gemini as one of the world’s largest hackathons and reports more than 26,000 registered builders. weight 1.800000 evidence

Suppressed as dependent: The excerpt calls the 26,000-participant event the largest hackathon in history by a very large margin.; A speaker cites about 26,000 participants and calls it the largest hackathon in history by a large margin.

Review gaps: independence reviewed

What would most change this: One independent, direct measurement that contradicts this claim would move it from Supported to Supported.

Hide calculation

0.9908 under ledger-default@0.3.0 at snapshot 27745 · state Supported · Review checks: 3 of 4 · stability HIGH · 8 sources, 4 independent lineages

Model ledger-default@0.3.0 (the default model, not the answer) · snapshot 27745 · trace sha256:4c54493918e1cd3e8eb1f081ebb7eb0e03c91379eeb58da7e917057ed88e55d0

Last changed at entry seq 13100; nothing logged since has borne on this claim.

How the number was reached

Each counted link is weighed by multiplying the factors the model declares; a factor it does not declare is not shown. Every factor name below links to what that number means.

Link	Working	Weight	Counted as
fe23b965 support	relevance DIRECT 2.0 × observation DIRECT_TEXT 0.9 × interpretation 1 step, 1 − 0.15 × 1 0.850000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance SELF 0.0 × edition NAMED_OR_UNRELATED 1	0.000000	0.000000 (dependent strongest only, kept fe0ff2d8)
38cc9f27 support	relevance MODERATE 0.6 × observation DIRECT_TEXT 0.9 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	0.540000	0.540000
4f2d938a support	relevance WEAK 0.2 × observation HEARSAY 0.1 × interpretation 1 step, 1 − 0.15 × 1 0.850000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance SELF 0.0 × edition NAMED_OR_UNRELATED 1	0.000000	0.000000 (dependent strongest only, kept fe0ff2d8)
5e665a49 support	relevance DIRECT 2.0 × observation DIRECT_TEXT 0.9 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	1.800000	1.800000
acff9ccc support	relevance MODERATE 0.6 × observation DIRECT_TEXT 0.9 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	0.540000	0.540000
1384a5ff qualify	relevance MODERATE 0.6 × observation DIRECT_TEXT 0.9 × interpretation 1 step, 1 − 0.15 × 1 0.850000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	0.459000	0.000000 (non directional)
fe0ff2d8 support	relevance WEAK 0.2 × observation EXPERT_ANALYSIS 0.3 × interpretation 2 steps, 1 − 0.15 × 2 0.700000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance SELF 0.0 × edition NAMED_OR_UNRELATED 1	0.000000	0.000000
279eee36 support	relevance DIRECT 2.0 × observation DIRECT_TEXT 0.9 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	1.800000	1.800000

prior 0.50 → log-odds 0.000000 + 4.680000 (the counted weights) = 4.680000 → probability 0.9908

Under neighbouring settings of the same model: 0.9636 to 0.9977, a spread of 0.0341.

Half-even rounding, six places for weights and four for the probability. The same inputs under the same model reproduce this exactly; that is what the trace hash above is for. How a score is worked out explains every factor, why it is there, and what the model sets it to.

Your view

Registered views

Nobody has registered a view yet.

Registered views are personal belief, not evidence: they never change Galedra's assessment. Affiliations are self-declared and shown only for groups of 5 or more.

Checked as part of

Statements this claim was broken out of. The claim is scored on its own; a statement's reading only counts its claims.

“The Build with Gemini XPRIZE is the largest hackathon in history by a wide margin.” · 1 claim · 28 September 2026
“The Build with Gemini XPRIZE is the largest hackathon in history by a wide margin.” · 1 claim · 28 September 2026
“The Moonshots podcast publishes two episodes per week.” · 6 claims · 22 September 2026
“The Navier–Stokes proof was produced by roughly 10,000 OpenAI agents working for about 88 hours.” · 23 claims · 20 September 2026

Evidence for

Blundin calls it the largest hackathon in history by a very large margin.

From OpenAI Agents Hijack a German Website, Jensen Declares AGI Arrived, and OpenAI Solves Navier-Stokes Read 2026-09-20 Relevance WEAK Steps 2 Counted

A superlative offered without any comparison set.
A speaker cites about 26,000 participants and calls it the largest hackathon in history by a large margin.

From OpenAI Agents Hijack a German Website, Jensen Declares AGI Arrived, and OpenAI Solves Navier-Stokes Read 2026-09-20 Relevance WEAK Steps 1 Counted

The superlative is asserted with a participant count but no comparison: the passage names no other hackathon and no ranking or registry against which 'largest in history' could be checked. The event itself is unnamed here, and the surrounding section is a promotion for it.
The excerpt calls the 26,000-participant event the largest hackathon in history by a very large margin.

From OpenAI Agents Hijack a German Website, Jensen Declares AGI Arrived, and OpenAI Solves Navier-Stokes Read 2026-09-20 Relevance DIRECT Steps 1 Counted
XPRIZE calls the Build with Gemini XPRIZE one of the world's largest hackathons and reports more than 26,000 registered builders, supporting its large scale but not independently establishing that it was larger than every comparable hackathon by a wide margin.

From Polyfork wins the Build with Gemini XPRIZE Read 2026-09-28 Relevance MODERATE Steps 0 Counted

The official organizer supports the broad size characterization; the superlative 'largest by a wide margin' is stronger than the wording in this source.
The XPRIZE Foundation itself describes Build with Gemini XPRIZE as one of the world’s largest hackathons.

From Polyfork wins the Build with Gemini XPRIZE for building a scalable AI business in 90 days Read 2026-09-28 Relevance DIRECT Steps 0 Counted

Directly supports the source’s superlative-relative characterization, though “largest ... by a wide margin” is stronger than the wording quoted.
The Foundation reports more than 26,000 registered builders across five categories.

From Polyfork wins the Build with Gemini XPRIZE for building a scalable AI business in 90 days Read 2026-09-28 Relevance MODERATE Steps 0 Counted

The registration count supports exceptional scale, but no comparative dataset is provided to establish the wide margin.
The XPRIZE Foundation describes Build with Gemini as one of the world’s largest hackathons and reports more than 26,000 registered builders.

From Polyfork wins the Build with Gemini XPRIZE for building a scalable AI business in 90 days Read 2026-09-28 Relevance DIRECT Steps 0 Counted

Official organizer source supports the comparative description and participation scale; 'largest in history by a wide margin' remains stronger than this wording.

Evidence against

None.

Qualifications

XPRIZE calls Build with Gemini the world's largest hackathon, without a comparative margin.

From Future Vision XPRIZE and Build with Gemini XPRIZE Name Top Five Finalists – Awarding $5M+ at Moonshots LIVE Read 2026-09-22 Relevance MODERATE Steps 1 Counted

The organizer asserts world-largest status but gives no comparison supporting 'by a wide margin'.

Suppressed as dependent

Evidence	Group	Kept instead
22c010c1		fe0ff2d8
7edc9f40		fe0ff2d8

Inferences

Concluded from

None.

Used as a premise in

None.

An inference is interpretation, not evidence: it never changes the assessment of its conclusion. Each premise is a claim with its own evidence.

Threads

None. Threads are for disagreements about how a determination was made — a statement whose figures are not in the passage it rests on, two sources that may share an origin. Something about the world belongs in the evidence above.

Claim edges

None. Edges are stored and displayed; v0.1 does not propagate probability across them.

Review checklist

Review checks: 3 of 4

3 checks by this claim's own author, alongside the independent review above. 1 OPPOSING EVIDENCE SEARCH · 1 QUALIFIER CHECK · 1 EVIDENCE VERIFICATION. A check by the person who recorded a claim does not raise its review coverage.

Check	Done	By
qualifiers reviewed	yes	32b50400
opposing search done	yes	3262847f
independence reviewed	no
primary source reviewed	yes	38cc9f27, acff9ccc, 1384a5ff, 279eee36

Summary

Supported. The main support is: XPRIZE calls the Build with Gemini XPRIZE one of the world's largest hackathons and reports more than 26,000 registered builders, supporting its large scale but not independently establishing that it was larger than every comparable hackathon by a wide margin. d3104e87

2 further items repeat the same origin and are not independent evidence. 22c010c17edc9f40

Qualifier: XPRIZE calls Build with Gemini the world's largest hackathon, without a comparative margin. 4ae3808d

A search for evidence in the opposing direction found none. 3262847f

A search for evidence in the opposing direction found something; see the counted evidence. 3262847f

Review checks: 3 of 4. coverage:6dc28559-c478-85c3-9400-f65971944d1a

Generated by stub-v0.1; every sentence cites graph ids.

Contribution history

seq	event	detail
2621	APPENDED
2622	ACCEPT	AUTOMATIC_AFTER_VALIDATION
2725	LINK_EVIDENCE	by 03192ed8 (accepted)
3900	TASK_RESULT	by 03192ed8 (accepted)
5359	LINK_EVIDENCE	by 56fe4c61 (accepted)
7982	TASK_RESULT	by 1efd24fe (accepted)
9696	LINK_EVIDENCE	by 1efd24fe (accepted)
10207	TASK_RESULT	by 1efd24fe (accepted)
13099	LINK_EVIDENCE	by 1efd24fe (accepted)

Score trace

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